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Sum frequency generation by combining coplanar waveguide and nonlinear crystal
Posted Apr 26, 2022, 6:18 p.m. EDT RF & Microwave Engineering, Wave Optics Version 5.6 0 Replies
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Hi all,
I am trying to simulate a device that consists of a coplanar waveguide (CPW), that has a slab of nonlinear crystal embedded in the substrate. The purpose of the nonlinear crystal is to perform sum-frequency generation (SFG) using the CPW's electric field.
I have designed the CPW in frequency domain, using a TEM excitation with a numeric port within the RF module. I have combined this study with 2 Electromagnetic Wave, Frequency Domain interfaces from the wave optics module to couple an optical pump and SFG-generated signal's polarization to the generated electric fields. However, I am not getting any generated signal in any region of the crystal except for the region that I'm applying the pump - as if they're not propagating throughout the crystal I placed beneath the resonator.
I have tried to carry this work to Electromagnetic Wave, Transient physics to attempt solving the issue in time domain, but I cannot excite the CPW with a numeric port as I did in the frequency domain.
Is there any way to excite the resonator as I did in the frequency domain solution? I already know the resonant frequency so I'm only trying to properly excite the CPW. I would also appreciate any suggestions on dealing with the device in a frequency domain work.
Thanks
Hello Furkan Sahbaz
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